One-pot synthesis of MIL-68(In)-derived CdIn2S4/In2S3 tubular heterojunction for highly selective CO2 photoreduction
一锅法合成MIL-68(In)衍生的CdIn2S4/In2S3管状异质结用于高选择性光还原
光催化二氧化碳还原的目标是高效、稳定地获得单一能源产物。因此，构建具有改善的表面和光电性能的高选择性光催化剂是实现这一目标的关键。本文提出一种简单的一锅硫化方法，构建高稳定和高选择性MIL-68(In)衍生的CdIn2S4/In2S3异质结。CdIn2S4/In2S3异质结具有分层管状结构，丰富的表面活性位点，良好的可见光利用率（λ < 600 nm），优异的电荷分离能力和较长的载流子寿命。此外，两种组分间的S型电荷转移机制提高了电子的还原能力。基于组分和结构间的协同作用，CdIn2S4/In2S3-250的CO产率达135.62 μmol·g−1·h−1，分别是In2S3和CdIn2S4的49.32倍和32.88倍。CdIn2S4/In2S3异质结的量子效率为4.23%，对CO的选择性为71%。
The goal of photocatalytic CO2 reduction is to obtain a single energy-bearing product with high efficiency and stability. Consequently, constructing highly selective photocatalysts with enhanced surface and optoelectronic properties is crucial for achieving this objective. Here, we have developed a simple one-pot vulcanization method to synthesize a MIL-68(In)-derived CdIn2S4/In2S3 heterojunction that exhibited stable and high selectivity. Multiple characterizations of the CdIn2S4/In2S3 heterojunction revealed a hierarchical tubular structure with numerous surface reactive sites, a high visible light utilization rate (λ < 600 nm), efficient charge separation, and a prolonged charge-carrier lifetime. Moreover, an S-scheme charge transfer mechanism, based on the interleaved band between the two components, improved the reduction capability of the electrons. Benefiting from the compositional and structural synergy, the yield CO by CdIn2S4/In2S3-250 (CI-250) reached 135.62 μmol·g−1·h−1, which was 49.32 times and 32.88 times higher than that of In2S3 and CdIn2S4, respectively. The CdIn2S4/In2S3 heterojunction exhibited a quantum efficiency of 4.23% with a CO selectivity of 71%.
CI-250还原CO2的原位FTIR谱图、途径以及S型电荷传递机制
One-pot synthesis of MIL-68(In)-derived CdIn2S4/In2S3 tubular heterojunction for
highly selective CO2 photoreduction
期刊名称：Rare Metals
中科院分区：中科院一区
发表日期: 2025年3月6日
文章链接: https://doi.org/10.1007/s12598-024-03193-8
作者列表: Dandan Wang, Mengyang Xu, Zhaoxin Lin, Jiahui Wu, Weiting Yang*, Hongji Li*, Zhongmin Su
期刊信息: Rare Metals, 2025,10.1007/s12598-024-03193-8.